Schühler, M., Wansch, R., Hein, M.
Planar antennas composed of finite periodically structured surfaces have been studied. Two differently sized periodic structures were measured and compared in terms of their radiation characteristics...
A method for measuring G/T antenna performance in an anechoic chamber (2009)
A method for measuring the G/T of low gain antennas in an anechoic chamber is proposed. It is based on a pattern measurement and an S/N measurement. For a small set of antennas the measurement...
A novel miniaturization technique in microstrip feed network design (2009)
By the example of a feed network for four-feed circularly polarized antennas an original S-section based miniaturization technique in microstrip feed network design is proposed. The idea is to...
Impedance measurement of a dipole above a periodically structured reflective surface (2008)
Schühler, M., Volmer, C., Wansch, R., Hein, M.
The impedance of a horizontal dipole antenna placed closely above a periodically structured reflective surface was determined. In order to characterize the antenna directly at its feed point, a...
Aperturgekoppelte Antenne (2007)
DE 102005010895 A1 UPAB: 20061101 NOVELTY - Aperture-coupled antenna has first radiation electrode (130), whose geometrical form is laid out in order to make possible radiation of circularly...
Miniaturized diversity dipoles for a localization system (2007)
A miniaturized dipole arrangement for a compact transmitter used in a real-time localization system is described in this paper. The main focus is on the radiation properties which should be as...
RFID in metallic environment (2007)
Bernhard, J., Leipold, T., Pflaum, A., Wansch, R.
In this paper we will describe some tag-technologies suitable for applications which require mounting the tags on or inside a metallic surrounding. It will describe the properties of a tag for UHF, a...
MiniTerminal - a small antenna for satellite reception (2007)
Wansch, R., Adel, H., Humpfer, H.
For the reception of satellite signals with a low signal to noise ratio a small antenna has been developed. The maximum aperture size is 400 cm² with an envisioned G/T of 0 dB/K.
A novel high performance antenna for GNSS applications (2007)
Popugaev, A., Wansch, R., Urquijo, S.
A novel low cost antenna for high-precision applications in Global Navigation Satellite Systems (GNSS) is described. The antenna has been designed to operate for all existing satellite navigation...
Antennenvorrichtung zum Senden und Empfangen von elektromagnetischen Signalen (2007)
DE 102007004612 A1 UPAB: 20080815 NOVELTY - The device (100) has a radiator (120) arranged over a mass surface (110) at a radiation distance (150), and a set of parasitic metallic bars (130) are...
WO2006032368 A UPAB: 20060602 NOVELTY - The antenna has a first planar antenna (102), a second planar antenna (104) and a device (106) for coupling the first planar antenna to a first component of a...
Adel, H., Wansch, R., Bernhard, J., Fischer, T.
DE 102005008063 A1 UPAB: 20061005 NOVELTY - An antenna (100) has a first radiator (110) with a first spiral (120), a second radiator (112) with a second spiral (130). The first radiator has a...
Planare Mehrbandantenne (2006)
DE 102005010894 A1 UPAB: 20061101 NOVELTY - The structure has a radiation electrode (130) that is arranged partially between a mass surface (110) and a radiation electrode (220). The electrode (130)...
A method for measuring time delay behavior of antennas (2006)
Adel, H., Hofmann, G., Wansch, R., Ziener, D.
The group delay behavior of antennas is of high importance for high accuracy localization and navigation systems. Next to the design of these antennas a measurement method is needed to determine this...
A tracking system for sports, logistics and robotics (2006)
Adel, H., Thielecke, J., Grün, T. Von Der, Wansch, R.
A system for precise tracking of fast-moving objects is described. It operates in the ISM band at 2.4 GHz. The processing power of the system is suited to track up to 140 objects. The concept is very...
Switched-line phase shifters with RF-MEMS and PIN-diodes (2006)
Schmidt, C., Schühler, M., Wansch, R., Weber, J., Hein, M.
This paper presents the examination and the comparison of two switched-line phase shifters operating in the 2.4-GHz ISM-Band. For the first realisation common pin-diodes were used as switching...
DE 10319093 B UPAB: 20041117 NOVELTY - The antenna device has 2 radiation electrodes (12,24), each connected to earth (22) at one end, one radiation electrode having a section provided by a conductor...
Design and measurement of integrated antennas for embedded systems (2005)
This paper highlights the meaning of a proper antenna design for embedded systems. To use the available space very efficiently these antennas should be integrated in the systems. They can then be...
EMV-Messung. Von Funkstandard-Risiken im Klinikumfeld (2005)
Weigand, C., Wansch, R., Couronné, R., Schlegel, H.
WLAN-Einsatz in intensivmedizinischen Bereichen des Klinikums Nürnberg- Fraunhofer-Institut untersucht Störpotenziale
BERUEHRUNGSLOSES LAGEMESSEN VON ROTIERENDEN TEILEN (2004)
Bernhard, J., Wansch, R., Gempper, S., Hering, J., Pecher, A., Glueck, S.
WO2003100743 A UPAB: 20040115 NOVELTY - The measurement arrangement has at least one sensor that rotates with and is fixed to a shaft part (1,1a) supported on a stationary bearing section (10)....
Methodology for measuring electrically small antennas (2004)
At the Fraunhofer IIS many antenna design and measurement problems deal with electrically small antennas for different wireless communication links. Therefore we want to establish a meaningful...
Beruehrungsloses Messen von Beanspruchungen rotierender Teile (2003)
Bernhard, J., Hering, J., Wansch, R., Gempper, S., Strauss, W.
WO2003014686 A UPAB: 20040923 NOVELTY - The method involves a sensor (2) on the rotating part (1) reflecting electromagnetic waves and measurably varying the wave properties based on the stress or...
Small antennas for wireless micro-systems: requirements, state of the art, future trends (2002)
This paper will describe the topology of wireless micro-systems networks and some of their key components. In particular we will deal with the antennas: loops, helices, F-antennas, patches and...
Empfaenger fuer eine drahtlose Energieuebertragung (2001)
Wansch, R., Grün, T. Von Der, Gerhaeuser, H.
DE 10017752 A UPAB: 20020516 NOVELTY - Rectifier module (20) designed as a one-wave or full-wave rectifier has a silicon carbide diode (22) to deliver a rectified output signal (24) and includes a...
Struktur, Aufbau und Modellierung drahtloser Mikrosysteme (1997)
Die nachfolgenden Ausführungen beschreiben die Verschmelzungen von drahtlosen Übertragungsverfahren in Telemetrieanwendungen mit der Mikrosystemtechnik. Dabei soll gezeigt werden, wie in Zukunft...
Peters, D., Bechtold, S., Schneider, P., Wansch, R.
Dieser Beitrag stellt neben dem Konzept des Simulatorvergleichs die bislang erzielten Ergebnisse der Evaluierung von Simulatoren für die Analyse von Mikrosystemen vor. Ein Ziel des im Rahmen von...